The FBI released images of two suspects in the Boston Marathon bombing they still consider to be “armed and extremely dangerous.”

At a press conference, FBI special agent in charge Richard DesLauriers referred to the two men as Suspect 1 and Suspect 2 and said Suspect 2 was spotted dropping a bag before a bomb exploded at the second bomb site. The two men appear to be “associated,” DesLauriers said.

DesLauriers asked the public for their help identifying the suspects, but asked the public not to approach them.